Vacuum carburizing

Metal treatment – Compositions – Heat treating

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148 166, C21D 106

Patent

active

041606809

ABSTRACT:
A vacuum furnace is provided with subatmospheric pressure control of a diffusable media and with a fan at an end of a heated load chamber to circulate uniformly the diffusable media around the workpieces which are contained within the load chamber.

REFERENCES:
patent: 2565360 (1951-08-01), Dufilho
patent: 3168607 (1968-02-01), Greene
patent: 3171759 (1965-03-01), Glenn
patent: 3519257 (1970-07-01), Winter et al.
patent: 3565410 (1971-02-01), Scherff
patent: 3796615 (1974-03-01), Westeren et al.
patent: 3853637 (1974-12-01), Gray et al.
Iron Age, vol. 208, #9, 8/26/71.

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